Just my opinion, but if a chucklehead shows up and doesn't know how to handle a .308, there's no way in he!! he's going to know how to handle a .338 WM and that little bit of extra weight/power isn't enough to make up for it. A gutshot bear with a .338WM is going to be just as mad as a gutshot bear with a .308. If somebody doesn't know how to handle his rifle, he shouldn't be hunting something that can eat him. I think it's a little silly to suggest that you can make up for lack of skill by simply stirring a big magnum into the pot.